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ULong2!
πŸ˜„
ULong2!

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Unsigned-Long/README.md

Github Stats

Hello, I'm Ulong2!

I'm currently a master candidate at the School of Geodesy and Geomatics (SGG), Wuhan University (WHU). My area of research currently focuses on integrated navigation systems and multi-sensor fusion. I'm working on the continue-time-based (B-spline-based) state estimation currently πŸ˜ƒ.

About Me

  • Student at Wuhan University, E-Mail: shlchen@whu.edu.cn.
  • A brief introduction about me can be found here.
  • I love photography, I also love writing cpp (cplusplus) and creating funny toy libraries.
  • Ask me about anything here.

Open-Source Works

  • RIs-Calib: a targetless continuous-time-based multi-radar multi-IMU spatiotemporal calibrator.
  • River: a continuous-time-based radar-inertial velocity estimator.
  • MI-Calib: a continuous-time-based imu-only multi-IMU spatiotemporal calibrator.
  • iKalibr: unified targetless spatiotemporal calibration for resilient integrated inertial systems.
RIs-Calib River MI-Calib
iKalibr

Research Works

  • iKalibr: a continuous-time, targetless, unified spatiotemporal calibrator. Related paper(s) πŸ‘‡:

    • S. Chen, X. Li*, S. Li*, Y. Zhou and X. Yang, iKalibr: Unified Targetless Spatiotemporal Calibration for Resilient Integrated Inertial Systems[J]. arXiv:2407.11420 [cs.RO]. [paper-arXiv] [code] [video] [under review 😴]
    • S. Chen, X. Li*, S. Li and Y. Zhou, "iKalibr-RGBD: Partially-Specialized Target-Free Visual-Inertial Spatiotemporal Calibration For RGBDs via Continuous-Time Velocity Estimation," in IEEE Robotics and Automation Letters (RA-L), 2024. [paper] [paper-arXiv] [code]
  • MI-Calib: a continuous-time-based multi-IMU spatiotemporal calibrator. Related paper(s) πŸ‘‡:

    • S. Chen, X. Li*, S. Li, Y. Zhou and S. Wang, "MI-Calib: An Open-Source Spatiotemporal Calibrator for Multiple IMUs Based on Continuous-Time Batch Optimization," in IEEE Robotics and Automation Letters (RA-L), 2024. [paper] [code] [video]
  • River: a continuous-time-based radar-inertial velocity estimator. Related paper(s) πŸ‘‡:

    • S. Chen, X. Li*, S. Li, Y. Zhou and S. Wang, "River: A Tightly-Coupled Radar-Inertial Velocity Estimator Based on Continuous-Time Optimization," in IEEE Robotics and Automation Letters (RA-L), 2024. [paper] [code] [video]
  • RIs-Calib: a targetless multi-radar multi-IMU spatiotemporal calibrator. Related paper(s) πŸ‘‡:

    • S. Chen, X. Li, S. Li, Y. Zhou and S. Wang, "RIs-Calib: An Open-Source Spatiotemporal Calibrator for Multiple 3D Radars and IMUs Based on Continuous-Time Estimation," in IEEE Transactions on Instrumentation and Measurement (TIM), 2024. [paper] [paper-arXiv] [code] [video]
  • ELIC-Calib: the extend version of LIC-Calib, a targetless continuous-time-based multi-LiDAR multi-IMU multi-camera spatiotemporal calibrator. Related paper(s) πŸ‘‡:

    • S. Chen, X. Li*, S. Li, Y. Zhou and S. Wang, "Targetless Spatiotemporal Calibration for Multiple Heterogeneous Cameras And IMUs Based on Continuous-Time Trajectory Estimation," in IEEE Transactions on Instrumentation and Measurement (TIM), 2023. [paper]
    • S. Li, X. Li*, S. Chen, Y. Zhou and S. Wang, "Targetless Spatiotemporal Calibration of Multi-LiDAR Multi-IMU System Based on Continuous-Time Optimization," in IEEE Transactions on Industrial Informatics (TII), 2024. [paper]
  • LIC-Calib: a targetless continuous-time-based LiDAR/IMU/Camera spatiotemporal calibrator, supporting both GS and RS cameras. Related paper(s) πŸ‘‡:

    • S. Li, X. Li*, S. Chen, Y. Zhou and S. Wang, "Two-Step LiDAR/Camera/IMU Spatial And Temporal Calibration Based on Continuous-Time Trajectory Estimation," in IEEE Transactions on Industrial Electronics (TIE), 2023. [paper]
    • X. Li, S. Chen, S. Li*, Y. Zhou and S. Wang, "Accurate And Consistent Spatiotemporal Calibration for Heterogenous-Camera/IMU/LiDAR System Based on Continuous-Time Batch Estimation," in IEEE/ASME Transactions on Mechatronics (T-Mech), 2023. [paper]

Interesting Point

So why is my nickname ULong2 πŸ˜ƒ? ULong is a data type in C++ that stands for unsigned long integer, which can store a large number, but no negative numbers are allowed. This represents my desire to explore a wide range of knowledge and a positive (non-negative) mindset. Interestingly, Long is also the pinyin for one of the Chinese characters in my name. And the number 2, yes, is my lucky number.

My BiliBili Channel

RIs-Calib River MI-Calib

My Status

Unsigned-Long's github stats

Bash C C++ C# Java LaTeX Markdown Python SQL

Github Stats

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  1. iKalibr iKalibr Public

    iKalibr: Unified Targetless Spatiotemporal Calibration for Resilient Integrated Inertial Systems

    C++ 192 29

  2. River River Public

    [IEEE RA-L 2024] River: A Tightly-Coupled Radar-Inertial Velocity Estimator Based on Continuous-Time Optimization

    C++ 80 7

  3. MI-Calib MI-Calib Public

    [IEEE RA-L 2024] MI-Calib: An Open-Source Spatiotemporal Calibrator for Multiple IMUs Based on Continuous-Time Batch Optimization

    C++ 35 3

  4. RIs-Calib RIs-Calib Public

    a continuous-time-based multi-radar multi-imu spatiotemporal calibrator

    C++ 30 7

  5. CTraj CTraj Public

    continuout-time-based state representation and optimization library

    C++ 18 2

  6. tiny-viewer tiny-viewer Public

    a tiny viewer based on pangolin library. May the tiny-viewer be with you!

    C++ 17 4